En10305-1 Seamless Cold Drawn Tubes

• Type: Seamless
• Technique: Cold Drawn
• Material: Carbon or Alloy Steel
• Surface Treatment: Bright Finishing or Polishing
• Usage: Pipeline Transport, Oil/Gas Drilling, Machinery Industry, Chemical Industry, Special Purpose
• Section Shape: Round
• Model NO.: KM-20200930
• Size: 4-260mm
• Thickness: 0.5-25mm
• Grade: E215, E235, E355,etc
• Processing Way: Cold Drawn or Cold Rolled
• Product Application: Auto Industry/for Machinery Use/Oil Cylinder Tube
• Package: in Bundle
• Transport Package: in Bundle
• Specification: 4mm~260mm
• Trademark: Kingmetal
• Origin: Made in China
• HS Code: 73043190
• Production Capacity: 500~1000 Tons Per Month

Product Description

EN10305-1 Seamless Cold Drawn Tubes

Standard: EN10305-1, EN10305-2, EN10305-3
Grade: E215, E235, E355
Delivery condition: +C, +LC, +SR, +A, +N

Size: 4mm-260mm

W.T.: 0.5mm-25mm

Shape: Round

Production type: Cold drawn or cold rolled

Length: Single random length/ Double random length or as customer's actual request max length is 10m 

Delivery condition for availability:

+C	Cold drawn / hard
+LC	Cold drawn / soft
+SR	Cold drawn and stress relieved
+A	Bright annealed
+N	Bright normalized

Technical delivery conditions:

• Part 1: Seamless cold drawn tubes.
• Part 2: Welded cold drawn tubes.
• Part 3: Welded cold sized tubes.
• Part 4: Seamless cold drawn tubes for hydraulic and pneumatic power systems.
• Part 5: Welded and cold sized square and rectangular tubes.
• Part 6: Welded cold drawn tubes for hydraulic and pneumatic power systems.

Chemical Composition

Steel Grade		Chemical Components (%)
Steel Name	Steel Number	C   max.	Si   max.	Mn   max.	P   max.	S   max.	AL   min.
E215	1.0212	0.10	0.05	0.7	0.025	0.025	0.025
E235	1.0308	0.17	0.35	1.2	0.025	0.025	/
E355	1.058	0.22	0.55	1.6	0.025	0.025	/

Delivery Conditions

The tubes shall be manufactured from hot finished seamless tubes by cold drawing or other suitable processes. The tubes shall be supplied in one of the delivery conditions as follows:

Designation	Symbol	Description
Cold drawn/hard	+C	No heat treatment after the final cold drawing process.
Cold drawn/soft	+LC	After the final heat treatment there is a suitable drawing pass.
Cold drawn and stress relieved	+SR	After the final cold drawing process there is a stress relief heat treatment in a controlled atmosphere.
Annealed	+A	After the final cold drawing process the tubes are annealed in a controlled atmosphere.
Normalized	+N	After the final cold drawing operation, the tubes are normalized in a controlled atmosphere.

Delivery Condition Symbol in accordance with EN10305 and DIN2391

Symbol in accordance with EN 10305	Symbol in accordance with DIN2391
+C	BK
+LC	BKW
+SR	BKS
+A	GBK
+N	NBK

Mechanical Properties

Mechanical properties at room temperature
Steel Grade		Minimum values for the delivery condition
Steel Name	Steel Number	+C		+LC		+SR			+A		+N
		Rm   Mpa	A   %	Rm   Mpa	A   %	Rm   Mpa	ReH   Mpa	A   %	Rm   Mpa	A   %	Rm   Mpa	ReH   Mpa	A   %
E215	1.0212	430	8	380	12	380	280	16	280	30	290 to 430	25	30
E235	1.0308	480	6	420	10	420	350	16	315	25	340 to 480	235	25
E355	1.0580	640	4	580	7	580	450	10	450	22	490 to 630	355	2